Improvement of the Accuracy of Spatial Representation of Invasive Exploratory Electrodes in Focal Epilepsy

Completed

• Conditions: Focal Epilepsy

• Registration Number: NCT02898935
• Lead Sponsor: Fondation Ophtalmologique Adolphe de Rothschild

Brief Summary

Reconstruction software allows visualization of cortical structure in 3 dimensions, showing on a single picture the position of all the electrodes. The EEG signal of each recording plot of the electrode is analyzed and compared with the underlying brain structure reconstructed by the software. It is therefore possible to visualize 1) ictogenic and epileptogenic areas using neurophysiological stereoelectroencephalography (SEEG) data and 2) adjacent functional cortical areas with functional imaging and SEEG. Software makes it possible to determine the links between these areas. This study aims to show that using these software is an asset in surgical decision and in the choice of surgical strategy.

Each patient has presurgical evaluation (usual care), including morphologic and (if necessary) functional MRI, EEG and SEEG. In this study, software will be used to analyze the processed data (FSL software, FMRIB laboratory, Oxford University and BrainVisa/Anatomist. The surgical decision will be taken according to the usual staff procedures, based on the usual examination results. After the decision making process, the staff will be asked to reconsider the surgical decision, according to the analysis provided by the software. The discrepancies between the decisions will be recorded.

Detailed Description

Not available

Study Timeline

• Study First Submitted: 2016-09-08
• Study First Submitted QC: 2016-09-08
• Study First Posted: 2016-09-13
• Study Start: 2016-11-25
• Status Verified: 2018-01
• Primary Completion: 2018-05
• Study Completion: 2018-07
• Last Update Submitted: 2018-09-17
• Last Update Posted: 2018-09-18

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• children aged 18 months to 17 years old
• drug resistant focal epilepsy
• scheduled for deep brain electrodes exploration to assess surgical indication

Exclusion Criteria

• contraindication to anesthesia or surgery
• refusal (of parents or child) to participate in the study
• no health insurance coverage

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
number of patients for whom surgical strategy would change if using the software	1 day	change in medical strategy includes surgery indication, resection volume, topography of resection area

Trial Locations

Locations (1)

Fondation Ophtalmologique A. de Rothschild; 🇫🇷 Paris, France